Attachment for promoting fuel combustion in locomotive fire-boxes.



No. 884,926. T i- PATENTED APR.'14, 19.08.

I F. L. HOLGOMB. ATTACHMENT FOR PROMOTING FUEL COMBUSTION N Locum/10mmFIRE'BOX'ES.

APPLICATION IILEDJULY 2a. 1906.

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. use the same.

'U'NIIEDSTATES orrrca.

FRANK 'L. HOLCOMB, or KINGSTON, NEW YORK.

\ x r'racrrman'r son rno'uo'r'me roar. cornms'rron m no'como'rrvnFIRE-BOXES.

speciflcationof Letters lfatent.

Patented April 14, mos.

. Application filed July 23,1906; steam. 827,426. i

To all whom it may concem:

Be it known that I, FRANK L. HoncoMn, a citizen of the United States,residing at Kingston, in the county of Ulster and State of New York,have invented certain new and useful Improvements in Attachments forPromoting Fuel Combustion in Locomotive Fire-Boxes; and I do declare thefollowing to be a fullfclear, andexact descri tion of the invention,such as will enable ot leis-skilled inthe art to which it appertains tomake and This invention relates to attachments for promoting fuelcombustion in locomotive fire boxes. a The object of the invention is torovide an attachment by means of. which lieated air may be supplied tothe fire box to aid the combustion of the gas or other fuel therein.A'llll'lQhGfobfl'ect is to provide an attachment ofrthis c iaracter bymeans of which the air may be heatedlby the waste heat in [passing fromthe locomotive.

With the above and other objects in view, the invention consists ofcertain novel features of construction, combination and are" ran ementof parts, as Wlll be hereinafter, def

scri ed and claimed.

In the accompanying drawings :-Figure 1 is a side view of a locomotivefire box and boiler, showing the application of the'invcntion thereto.Fig. 2 1s a vertical, cross sectional view through the smoke box of the10-1 comotive taken on line 2-2 of Fig. 3 and looking in the directionofthc arrows thereon; and Fig. 3 is a horizontal sectional view throughthe smoke box and a portion of the boiler, taken on the line 3-3 of Fig.2 and looking in the direction'of the arrow thereon.

Referring more particularly to the draw ings-,1=-denotes the fire box,and. 2 denotes the boiler of the locomotive. n the forward end of theboiler is arranged the usual smoke box 3. In the smoke box3 around theupper portion of .the same and arranged in an arc is a series of airpipe coils 4, one end of said "coiIsnpening through the side of thesmoke box, as shown at 5, while the opposite end of the coil is adaptedto open into a passage 6 formed by sheet metal strips 7 bent inchannel-iron form and secured to the opposite sides of the smoke box bylaterally projecting flanges 8 formed thereon.

The strips 7 are offset below the connection of the lowermost coil ofpipes, as shown at 9, and with said ollset portion of the strips '1claim as new and desire-to secure I is connected the forward ends of aseries of air conducting pipes 10. The pi es.10 'are arranged along theside of' the boi er and extend downwardly at different points when 0"they reach the fire box, as shown at 12, said downwardly bent endsbeing turned into the ash pit 13 immediately below the grate of the firebox, whereby the heated air of the coils 4 of the smoke box will bedischarged into said 5 'ash pit from which the air will pass into thecombustion chamber, thereby materially promoting combustion of the fuelgases therein. By;arranging the heated coil and conduct- :ing pipes as.herein shown and described air tion will be readily understood withoutrequiring a more extended explanation.

Various changes in the form, roportlon and the minor details ofconstruction may be resorted to without departing from the principle orsacrificing any of the advantages of this invention, as defined bythe-{appended claims.

Having thus described my invention, what by 116i?- ters-Patent, is z- 1The combination with the smoke box of a locomotive boiler, of channeledmembers or passages applied to the outside of said box, a series of airsupply pipes arranged interiorly of said smoke box and embracing aplurality of horizontal tortuous pipe sections, t,

ch of the latter communicating at one end with the atmosphere and at theother end with said passages, and a'second series of pipes,communicating with said assa es and extending alongside of saidboi er, te rear ends of said last referred to pi es extending into the dire boxof said boi er below the grate.

locomotive boiler of channeled members or passages applied to theoutside of said smoke box, a series of air supply pipesarrangedinteriorly of saidsrnoke. box and embracing a. plurality ofhorizontal tortuous pipe sections, 110

each of the latter communicating at one end with the atmosphere and atthe other end 2. Thecombination with asmoke box of a In testimonywhereof I have hereunto set my hand In presence oi two subscribing \nt-1( nesses.

with said passages, and a second series of pipes communicating with saidpassages and extending alongside of said boiler, the rear end of saidlast referred to pi )es extending l 5 into the fire box of said boilerbelow the grate, said channel members or passageshav- Vv'itnvsses:

FRANK L. nouwoim.

ing lower offset portions at their points of Rnmsnx B. Du Bins,

(ODHGCUOH with sand last referred to plpes. W. A. VAN \ALKENBURGII.

